alcohols Flashcards
1
Q
which two ways can ethanol be manufactured?
A
- fermentation (only for ethanol)
- hydration of ethene
2
Q
what is the catalyst needed for hydration reactions?
A
Phosphoric acid PO3SO4
3
Q
what is the temperature needed for hydration reactions?
A
300°C
4
Q
what is the pressure needed for hydration reactions?
A
60-70 atmospheres
5
Q
what is fermented when producing ethanol?
A
glucose
6
Q
what enzymes are used in the fermentation of glucose?
A
yeast
7
Q
what needs to be in absence for fermentation of glucose?
A
air
8
Q
why are alcohols oxidised?
A
to form carboxylic acids
9
Q
what is the functional group of alcohols?
A
-OH
10
Q
what does ethanol form when oxidised?
A
ethanoic acid
11
Q
which three ways can ethanol be oxidised?
A
- complete combustion
- oxidation with air
- heating with potassium dichromate
12
Q
what else needs to be present in the reaction between potassium dichromate and ethanol?
A
Sulphuric acid
